From: Tony Spadafora (ALSpadafora@lbl.gov)
Date: Tue Mar 11 2003 - 17:27:22 PST
Rob's page is:
http://brahms.phy.vanderbilt.edu/~rknop/scp/hst/
-------- Original Message --------
Subject: my data update page
Date: Tue, 11 Mar 2003 17:20:33 -0600
From: "Robert A. Knop Jr." <robert.a.knop@vanderbilt.edu>
To: Tony Spadafora <ALSpadafora@lbl.gov>
Tony -- if you could forward this to the relevant people, though a
careful relevant set....
There is a lot of stuff on the data update page, most of which won't go
into the paper, but which answers some questions we've been asking. It
may take some time to digest, so people may want to look at it well
before the meeting on Thursday -- though please DO NOT start sending me
comments on it before the meeting, because I already have as much as I
can digest at the moment.
I'm editing this page all the time as I do more.
Most recently, I've put on the effects of using the Riess Prior,
assuming I've applied it correctly. I haven't been able to reproduce
the confidence intervals from the R98 paper, but then I'm using my fits
of the Hamuy SNe and they had an additional 9 SNe we don't have.
(Perhaps those are the Riess SNe? I haven't tried that.) Plus, I'm not
sure what errors they used, though I do suspect strongly they used *no*
intrinsic supernova dispersion, on top of cheating about the colors.
There are six comparison plots that show the effect of using the prior.
For the High-z team data, as well as our data from P99 and the data from
the current HST paper, I compare E(B-V) corrections done right to
corrections done with the prior, and I compare E(B-V) corrections done
with the prior to *no* E(B-V) corrections (well, really, fits
corrections which throw out reddened supernovae as per P99). The prior
makes a HUGE difference. With the current set, the E(B-V) corrections
using the prior produce confidence limits more similar in size to the
non-corrected fits than to the fits which do E(B-V) right. I don't want
to show this plot in the paper (I don't want to touch that damn prior!),
but it gives us a VERY nice assertion to make.
Click on thumbnail images to get postscript images.
-Rob
-- --Prof. Robert Knop Department of Physics & Astronomy, Vanderbilt University robert.a.knop@vanderbilt.edu
This archive was generated by hypermail 2.1.4 : Tue Apr 15 2003 - 11:10:34 PDT